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View Full Version : perturbation on large mass-spring system, determine damping factor


b83503104
Apr17-04, 04:08 AM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>I have 10 (or more generally, N) masses randomly distributed in a 2\ndimensional finite area, and each mass is connected to all the other\nmasses by identical springs and identical viscous damping.\n\nGiven the spring constant and the mass, how do I determine a good\ndamping factor such that when one mass is disturbed from the initial\nrest condition, the overall system will have least (or just less)\noscillation? I\'m looking for a reasonable working, not necessarily\nexact, solution, so that I can do some reasonably looking simulation\nwithout randomly guessing the value of the damping parameter.\n\nOr maybe there are suggestions on how to "guess" a reasonable damping\nvalue?\n\nThanks\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky>I have 10 (or more generally, N) masses randomly distributed in a 2
dimensional finite area, and each mass is connected to all the other
masses by identical springs and identical viscous damping.

Given the spring constant and the mass, how do I determine a good
damping factor such that when one mass is disturbed from the initial
rest condition, the overall system will have least (or just less)
oscillation? I'm looking for a reasonable working, not necessarily
exact, solution, so that I can do some reasonably looking simulation
without randomly guessing the value of the damping parameter.

Or maybe there are suggestions on how to "guess" a reasonable damping
value?

Thanks